Friday 22 February 2013

2.48 describe experiments to investigate the effect of exercise on breathing in humans.

During exercise cells respire more quickly (to provide more energy for movement) this means oxygen has to be delivered more quickly and carbon dioxide taken away more quickly. As a result of this the lung muscles contract and relax more rapidly and the heart beats faster.

Measure a persons breaths per 10 seconds when stationary.
Then after one minute after running at 5mph then at two minutes and so on.
You will find a linear relationship as described above between the two.
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5 comments:

  1. Taylor29 December 2015 at 07:19

    ily Hannah <3

    ReplyDelete
  2. Olly Perkins7 June 2016 at 09:27

    Thanks so much you have helped me so much hannah

    ReplyDelete
  3. Unknown13 October 2016 at 13:14

    Thankyou!

    ReplyDelete
  4. Mike Tsang26 June 2017 at 02:50

    The Biology Syllabus has changed.... New Syllabus Blog:

    http://igcse-biology-2017.blogspot.hk

    ReplyDelete
  5. SophieRice26 June 2017 at 18:05

    more at

    http://igcse-biology-notes.blogspot.hk/2017/06/248-describe-experiments-to-investigate.html

    ReplyDelete

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